Michigan Administrative Code
Department - Licensing and Regulatory Affairs
Public Service Commission
Preservation of Records of Electric, Gas, And Water Utilities
Part 2 - SCHEDULE OF RECORDS AND PERIODS OF RETENTION
Section R. 460.2569 - Electricity transmission and distribution records; retention periods

Universal Citation: MI Admin Code R. 460.2569
Current through Vol. 24-04, March 15, 2024

Rule 69. The following electricity transmission and distribution records shall be retained for the periods listed:

(a) Substation and transmission line logs. 3 years.
(b) System operator's daily logs and reports of operation. 3 years.
(c) Storage battery and other equipment logs and records. 3 years.
(d) Interruption logs and reports. 6 years.
(e) Records of substation general inspections and operation tests. 3 years.
(f) Apparatus failure reports. 3 years.
(g) Line-trouble reports and records. 3 years.
(h) Lightning and storm data. 3 years.
(i) Insulator test records. 3 years.
(j) Reports on inspections and repairs of all street openings. 6 years.
(k) Records of meter tests. Until superseding test, but not less than 2 years or as may be necessary to comply with service rules regarding refunds on fast meters.
(1) Meter shop reports (monthly reports summarizing tests and repairs). 3 years.
(m) Meter history records. For the life of the meter or as may be necessary to comply with service rules regarding refunds on fast meters.
(n) Transformer history records. For the life of the transformer.
(o) Records of transformer inspections and oil tests. Destroy at option.
(p) Pole, tower, structure, equipment, and other history records. Note: Life or mortality study data for depreciation purposes shall be retained for the life of the corporation. For the life of the equipment.

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